tools.omikuji.dev

Finger Doodle

Trace and a line grows; tap and a bubble pops.
Everything fades on its own — no cleanup needed.

✓ No sign-up ✓ Records stay on device ✓ Free · no ads
Keep holding to open “Grown-up settings”

Opens full size when pressed

Anyone else can scan this QR code to play right away

Press and hold the very top of the screen for about 2 seconds to open “Grown-up settings” (a spot a child can’t open by accident).

How to use

1

Trace the screen with a finger and a soft round line grows. Slow draws thick and rich, fast draws thin.

2

Tap and a bubble swells up and pops on the spot. The color changes with every tap.

3

Sweep with a palm or a broad touch and petals and stars scatter and dance across the screen.

4

Drawings gently fade after a few seconds, so the canvas never fills up. Play over and over.

🎨 For grown-ups

  • Press and hold the very top of the screen for about 2 seconds to open “Grown-up settings” (a spot a child can’t open by accident).
  • Sound, fade speed, brush, background and colors can all be changed in settings. Turn sound off in waiting rooms or on the train.
  • “Go full screen” makes it harder to switch away (supported devices also stay awake).
  • There is no color-picking step. Any spot you touch produces a beautiful color, so there’s nothing to choose.

Settings are stored only on this device; drawings are never sent or saved anywhere.

Features

Just trace and tap — no color picker
Zero UI buttons in normal play. The whole screen is the canvas, and any touch answers back in rainbow.
Fades on its own, play forever
Lines and bubbles softly fade in a few seconds, so the canvas never fills up. No cleanup, no “erase it” tantrums.
Touch responds with sound and color
Tracing and tapping play pleasant tones (black-key pentatonic), teaching cause and effect with instant feedback. Sound can be off.
Grown-up lock · no ads
Settings sit behind a press-and-hold gate at the top. Full screen and disabled zoom prevent mishaps. No ads, fully free, records stay on device.

Great for

Waiting rooms, trains, dining out when you need quiet minutes (sound off)
Rainy-day indoor play something to hand over in a moment
A first smartphone experience learning cause, color and sound
Siblings together multi-touch lets them draw at once

FAQ

Is it free to play?

It’s completely free. No sign-up, no install, no ads. It runs in the browser alone.

Can I save the drawings?

By design, drawings fade away on this device. There is currently no save or share feature (a deliberate choice for little ones).

Will it jump to other screens?

Full screen is recommended, and scrolling and zooming are disabled. Settings sit behind a press-and-hold gate at the very top. The OS itself can’t be fully locked, so caregiver supervision is recommended.

Can I turn the sound off?

Yes, in Grown-up settings. You can also launch muted with a `?sound=off` URL.

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